g
p = 3.141592653590 for calculations.
p = 3.141592654 for display.
Example
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p |
2 V g < |
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n |
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³ Problem
What is the area of a circle if the radius is 12 cm?
Reminder: A = pr2.
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g V 12 G 2 < |
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n |
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The area of the circle is 144 p square cm. The area of the circle is approximately 452.4 square cm when rounded to one decimal place.